Apparatus for manufacturing insulating-sockets.



I ATTORNEY No. 858,386. I PATENTED JULY 2, 1907.

I -E. HAEFELY.

APPARATUS FOR MANUFACTURING INSULATING SOCKETS.

APPLICATION FILED MAY 2, 1906.

Rig. 2.

UNITED STATES PATENT omuon,

' EMI L HAEFELY, OF BASEL, SWITZERLAND, ASSIGNOR TO WESTINGHOUSE ELECTRIC & I MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

Specification of Letters Patent.

Patented July 2, 1907.

Ap llC8.tlO.'l filed May 2', 1906. Serial No- 314,911.

To all whom it may concern:

Be it known that I, EMIL HAEFELY, a citizen of the- Republic of Switzerland, and a resident of Basel, in Switzerland, have invented a new and useful Improvement in Apparatus for Manufacturing Insulating-Sockets, of which the following is a specification.

My invention relates to the manufacture of insulat ing tubes and more particularly to machines for manufacturing tubes of comparatively large diameters.

The object of my invention is to provide a machine which shall be simple and compact in construction and which shall operate effectively to produce insulating tubes of superior quality and of uniform density and dimensions.

With these ends in view, my invention is embodied in a machine having a rotatable drum, a pressure de- In the accompanying drawings, Figure 1 is a view,.

partially in side elevation and partially in section, of a machine embodying my invention. Fig. 2 is a rear elevation of a portion of the machine, and Fig. 3 is a detail, sectional view of the pressure device.

The main features of the machine frame comprise two vertical standards a and a table a Suitably journaled in the standards a is a shaft b one end of which is connected by gearing B to a suitable motor D. Mounted upon the shaft b is a drum 2, the drum being detachably fastened to the shaft by suitable means, such as set screws, one of which is shown at b. It will be understood that the .di'um is detachably mounted upon its shaft in order that it may be replaced by a drum of either larger or smaller diameter when it is desired to manufacture insulating tubes of different dimensions from those which may be manufactured by the use of the drum here shown.

The pressure device 0 which is utilized in connection with the drum z comprises two hollow members 0 which project downwardly and outwardly from each other at a suitable angle, here shown as substantially a right angle, to form a trough-shaped structure. Each hollow member e comprises two plates 0 and 4: provided with spacing bosses and clamped together by screw bolts 0*". Each of the upper plates 0 is provided with two outside bosses 0 to receive screw bolts 0 by means of which the members 0 areclamped to two hanger bars t of inverted V-shape. Each hanger bar t is provided with a plurality of holes t in order that the members 0 may be adjusted, as to position, to adapt them to drums of different diameters or for any other purpose. suspended from a horizontal rod d the ends of which project through slots e in the frame standards a, these The hanger bars t are loosely' connections serving to guide the pressure device as it is moved up and down. The-rod d is provided, at its middle point, with a collar d which is connected to a screw-threaded raising and lowering rod 9 by means of a lost motion spring connector f comprising a cylinder f a spring 11 and heads on the adjacent ends of the rod g-and a projection from the collard. The pressure device may be raised and lowered by the means just described and bevel gear wheels 9 and 9 a shaft 9 and a hand wheel 9, and, when lowered into operative position, the weight of the pressure device 0 will exert the desired constant pressure upon the material as'it is applied tothe drum 2. The interposition of the spring '5 also insures a gradual application from the drum, thus avoiding any possible injury to i the surface of the tube, either during formation or after completion.

' In order to apply such heat to the material as is necessary to insure the formation of a tube of the desired characteristics and superior quality, I locate gas pipes k adjacent to the open lower ends of the pressure members c, the said pipes being provided with small apertures adjacent to said open ends so that the gas will escape in small jets which, when lighted, will serve to' heatthe plates to the desired temperature, the products of combustion passing through the plates and escaping at the top thereof. As here shown, the lower edges of the plates 0 and c are beveled toform a substantially V-shapedrecess to receive the pipe 70 and from the pipes k and, when the desired temperature has been obtained, paper 'or other suitable fibrous material is fed to the drum 2 fromha. r011 (not shown), over the table a and under a guide roller 1 and is wound once around the druin. The surface of the paper or other fabric is then coated with a layer of suitable varnish or other similar binding material, and the drum is rotated at a suitable speed to secure the formation of a tube of the character desired. In case a tube composed of paper,.mica and varnish is desired, the mica is placed upon the coating of varnish as the paper passes to the drum and thus constitutes an intermediate layer between the varnish and the preceding outside layer of paper.-

The simultaneous application of heat and pressure drum.

by means of the pressure device 0 serves to melt the varnish and compress the layers of paper and varnish or the layers of paper, mica and varnish into such intimate contact as to produce a tube of great compactness and density as well as of uniform dimensions.

The length of the tube formed may be substantially equal to the length of the drum or of less length, if desiredfand a tube of any desired diameter may be made by selecting a drum of proper diameter upon which to form the tube.

The means fordriving thedrum, the form of the pressure device and the means for applying the heat may, of course, be varied from what is shown without departing from my invention.

I claim as my invention:

1. A machine for manufacturing insulating tubes comprising a rotary drum to receive successive layers of sheet material, a self-adjusting pressure device comprising a pair of divergent pressure members that are located above said drum and press against said material along two lines of contact, means for adjusting said pressure members toward and away from each other, and means for heating the material as it is wound upon the drum.

2. A machine for manufacturing insulating tubes comprising a rotatable, detachable drum to receive successive layers of fabric and binding material, a pressure device comprising loosely suspended hanger bars, a pair of pressure members that rest freely upon the outer layer of wound fabric, and means for adjusting said pressure members along said hanger bars, and means for heating the fabric and binding material as they are wound upon the 3. A machine for manufacturing. insulating tubes comprising a drum, means for rotating the same, a pressure device located above said drum and comprising loosely suspended hanger bars, a pair of hollow pressure plates, means for adjustably attaching said pressure plates to said hanger bars, means for guiding said pressure device and means for heating the material the drum.

4. In a machine for manufacturing insulating tubes, the combination with a drum adapted to receive successive layers of sheet fabric and means for rotating the same, of a pressure device located above the drum comprising loosely suspended hanger bars, two part, hollow pressure plates, means for adjustabiy attaching said plates to said hanger bars, and means for heating said pressure-plates.

' 5. In a machine for manufacturing insulating tubes, the combination with a rotatable drum adapted to receive successive layers of sheet fabric and binding material, of a pressure device comprising a plurality of inverted, V- shaped hanger bars, two angnlarly disposed pressure plates, means for adjustably attaching said plates to said as it is wound upon hanger bars to rest freely and equally upon the upper side of the drum or the material wound thereon and means for raising said pressure device out of contact with the drum comprising a lost motion spring connection device.

6. In a machine for manufacturing tubular insulating bodies from sheet material, the combination with a rotatable drum, :1 pressure device comprising a plurality of loosely suspended hanger bars of inverted V-shapc, two diverging hollow plates, menus for adjustably attaching said plates to said hanger bars to rest freely upon the material wound upon the drum and means for heating said plates.

7. In a machine for manufacturing tubes from sheet fabric and binding material, the combination with a rotatable drum, of a pressure device comprising a plurality of hunger bars of inverted V-shape, a pair of hollow pressure plates adjustably attached to the inner faces of said hanger bars, dampers for the upper edges of said plates and heating devices located at the lower edges thereof.

8. In a machine for manufacturing tubes from sheet fabric and binding material, the combination with a rotu- -table drum, of a pressure device comprising a plurality of hangers of inverted V-shape. means for raising and lowering said hangers, a pair of hollow pressure plates adjustably attached to the inner sides of the hangers, dampers for the upper edges of said plates and heaters located filljacent to the lower edges of the plates.

9. in a machine for making tubes from sheet fabric and binding material, the combination with a rotatable drum, or a pressure device comprising a plurality of hunger bars of inverted V-shape. a pair of hollow pressure plates supported by said hanger bars and the lower edges oi which are of V-shape and heater pipes located in the recesses in the lower edges of said plates.

10. In a machine for making tubular insulating bodies from sheet material, the combination with a rotatable drum, of a pressure device comprising two diverging hollow members. means for adjusting said members toward and away from each other and means for heating said members.

11. In a machine for making tubular insulating bodies from sheet material, the combination with a rotatable drum, of a pressure device comprising two diverging members, means for adjusting said members toward and away from each other and means for heating said members.

12. In a machine for making tubular insulating bodies from sheet. material, the combination with a rotatable drum, of a pressure device comprising two diverging pressure members, hanger bars to which said members are clamped, means for loosely supporting said hanger bars and means for heating the pressure members.

In testimony whereof, I have hereunto subscribed my name this 30th day of April, 1906.

Witnesses:

Wnsnnr G. CARR, BIRNEY HINES.

EMIL IIAEFELY. 

